Not always needed but very handy when you don't have your tool box at hand. The leatherman bit kits have a variety of attachable bits  and can be used with the new leatherman ratchet driver or the old standard extender bar.  This pouch is made for only 2 bit kit cases. 
Please note the tools are not included in the sale 
You can also purchase a belt loop with silver hook clasp as pictured so you dont place your extra tools somewhere were you cant find them.  + $18
Available in black or brown leather .